题目内容
(请给出正确答案)
[主观题]
一堂好课的标准有哪些?
答案
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第6题
第8题
A.抓住重点、难点、关键
B.内容正确、充实
C.学生学习积极,配合默契
D.媒体的运用得当有效
E.教学机智
第10题
(1)一堂数学课和一堂经济学课;
(2)网球和网球拍;
(3)牛排和龙虾;
(4)目的地相同的飞机旅行和火车旅行;
(5)熏肉和鸡蛋。
Which of the following combinations of goods are complements and which are substitutes? Could they be either in different circumstances? Discuss.
a. a mathematics class and an economics class
b. tennis balls and a tennis racket
c. : steak and lobster
d. a plane trip and a train trip to the same destination
e. ; bacon and eggs